<div class="user-input">
  <form>
    <div class="text-center mb-4 base-info-header">
      <h3 class="h3">基本信息</h3>
    </div>
    <div class="form-group">
      <input type="text" placeholder="姓名" class="form-control">
    </div>

    <div class="form-group">
      <input type="text" placeholder="出生年月" class="form-control">
    </div>

    <div class="form-group">
      <input type="text" placeholder="年龄" class="form-control">
    </div>

    <div class="form-group">
      <input type="text" placeholder="手机" class="form-control">
    </div>

    <div class="form-group">
      <input type="text" placeholder="电子邮件" class="form-control">
    </div>

    <div class="form-group">
      <input type="text" placeholder="学历" class="form-control">
    </div>

    <div class="form-group">
      <input type="text" placeholder="专业" class="form-control">
    </div>

    <button class="btn btn-primary col-md-12">下一步</button>
  </form>
</div>
